Way more important than any class (and I took one), is to buy the PowerScore Bibles, all three "10 Actual" books and all of the PTs you can afford.

Repitition on the games sections -- doing them over and over until you are fast and always right.

And after you take a full PT, spend a lot of time going over your answers. I circled questions I wasn't sure about while I was taking the test and, even if I ended up getting it right, went back and broke down the question to figure out why the credited answer was credited.

The downfall of the class approach is, there's no magic key they can teach you, beyond what's in the bibles. It just takes a lot of practice and repitition.

I had all three powerscore bibles, but it wasn't until I took the powerscore full length class that studying became less tedious and felt more productive. The class proctored tests attempted to simulate the real testing environment and that helped. I also met people in class who were willing to do extra practice tests with me that we self proctored, in addition to studying together outside of class. Those classmates helped about as much as the course did, but without the course I wouldn't have been in touch with people working toward the same test date, with the same determination to do well.

Classes are a total racket. If you are reasonably bright and motivated then buy the bibles and dozens of preptests, go to a library and study. You'll probably do better than you would have with Kaplan.